Door-operating means



Nov; 22, 1927. 9 1,649,989

' w H. w. SHONNARD DOOR OPERATING MEANS Filed Feb. 1926 5 Sheets-Sheet l A'ITORN Nov. 22, 1927. 1,649,989

H. w. SHQNNARD DOOR OPERATING MEANS Filed Feb. 9. 1926 s Sheets-Sheet 2- I l E I w. mm

INVENTOR ATTORNEY "Nov. 22, 1927. 15649389 H. W. SHONNARD 7 DOOR OPERATING MEANS Filed Feb. 9. 1926 s SheetsSheet 5 INVENTOR BY I ATTORNEY Federated Nov. '22, 1927.

UttiTE- srA-Tns I v 1,649,989 PATEN joF c HAROLD w. sHo NAaD, OEMQNTGLAIR, NEW-JERSEY, ,ASSIGNOR ro ELEVATOR: surrams COMPANY, me, AflCQRPORAT-ION or, ew JERSEY.

noon ornnn'rme MEANS;

Application "filed" February the apparatus; for V controlling; the electric:

safety circuits largely: used in elevatorpractice in connection with the: doors at the various floors:

Theiprincipal .obj ect. offinyr improved door closer is the provision of apparatusnwhich canbe; largely: assembled in; the factory,- and which isso arranged: as to occupy a Hill-1'11 inumlofspace b'ot-h'ei nzthe horizontal dimension parallel to the A planes of. movement-- of the doors and at right angles: thereto;

In order to economize. valuable" space, many elevator shafts are so constructed as to afford practically. no room. at all foridoors or door closersbeyond.thIe-.space taken up by the: elevator cage, in a horizontal direction in theplanes of movement-of the sliding doors. width of the sill plate is restricted to three and three-quarters inches; and, wherethe room afforded is so confined; it is-not pos-' sible to install the styles Qfsliding doorsheretofore inuse-together with thenecessary door controlling apparatus. p The present invention prov-ides a form t of door closer and checking means which can. be; successfully installed in elevator shafts offering only therestricted space aboveispec ified, and: at the; same time this: isaccomplished by means which can be largely assembled in the factory, thereby effecting, a great; saving in time and labor inactual installation. This is accomplished. by. fixing the supporting plate to which the door operator is pivoted upon the, freed-face of the closing device, and allowing the doors to slide in under the closing device, and inside of the aforesaid supporting plate.

The invention is illustrated in a preferred embodiment by way of example in the accompanying drawings, wherein Figure 1 is a View in elevation of a part of a door, with the closer and master interlock or safety switch, Figure 2 is a similar view of one side of the door when in open position, Figure 3 is-an end view of the same and Figured is a view in elevation on a larger scale of my preferred master safety switch.

In Figures 1 and 2 the two sliding doors at a given floor on an elevator shaft are Moreover in certain instancesthe 9, 1926. Serial No: 86,988.

shown 10v and 11. i Thedoor lis sus= pended" from hangers 12- adapted toroll along-the guide-bar or rail'l'S;

i :Above-thelevel-o-f'thedoors and 'et' one side of the door opening isfixed the; auto-- mat-1c: door operator- 14, preferably of the type in which the door closing elementproper is combined with means for checking the: final door movement in, -h 1 &

and closing-to prevent-slamming: This-1st wellknown device the details of nota..partof thepresentinvention: A- supporting plate 15% isfiiced lto 'tlie-outer face of the'door closer 14', andf-i extends dawn along one side of the door "opening, as shown to a point about opposite-=the middle of the, doors and 11.

The sliding back and forth of the door 'lfiis". accomplished mymeans; of' the locking; toggle arms 16 and 17 pivotally connected" with the door 10'a-t'19; andthearm 1-7Iis" similarly connected with and, supportednby' the plates at 20.- An' extension 21"o.fithev arm- 16 forms a handle whereby-the toggle; arms are manually brought into, the position shown in F igure 2Iin-opening the door;

The closing of the dooris accomplished in" awell'knownmanner by- 'means, Within the closer ll which act through'th'e arm-22,- and the connectingbar 23 pivotally attached" at" one end tothe arm- 24sfi'xed atthe otheifi'toan-a -Jrm Q Lfi Xed-to the toggle arm 17i W'hen the door is' o-pened, as in Figure 2; theswing ing catch 25 may be brought undera stop26 to lock the partsin-open position; preventing; operation-of the door'closen v As clearly shown in Figure 3,'the sliding door 10, when inopen position, moves under the door closer 14, and betweenthe wall and; the. supporting'plate 152' This is made possible by locating the supporting plate 15 on the outer face of the door closer, as shown and described;

At the bottom of F igure'3 is shown the sill plate, and from inspection of the vertical dotted line in Figure 3, it will be seen that my invention makes it possible for the doors and all the working parts connected therewith to be accommodated within a space inside of the shaft wall no wider than the sill 27.

My invention also makes it possible to assemble the door closing means, the toggles and the supporting plates for these latter at the factory, thereby eliminating a great deal of time and labor in final assembly and preventing the possibility of many errors in measurement and location, leading to loss of time and money.

In many elevators, depending upon electric currents for operation it'is customary to employ a master switch or interlock, generally near the top of the shaft, which in sures the shutting of all doors before starting the elevator cage, by keeping the operative circuit open until the doors'are shut. These are generally operated by a cable ex tending down alongside 'ot the shaft which extends over an operating pulley at the switch and has aweight attached to it. It the cable breaksorthe weight becomes detached, such a master switch will tail to.

operate. v One feature of my inventionis a means for operating the master switch so contrived that it the cable breaks or the counterweight on the cable is disconnected, the switch will automatically go to open circuit position and the elevator cannot be moved.

The switch 28 may be of any well known construction the details of which are not here shown, and it is operated by an arm 29 connected by a rod 30 with a grooved wheel 31 over which passes a cord or chain 32. This last is continued down past all the doors in the shaft andis kept taut by-a weight 33.

Opposite each door in the shaft, the cord, rope or chain 32 carries a ball 34,01 equivalent device, capable of engaging with an arm 35 on the connectingbar operated by the door closer. l/Vhen the doors are closed, as in Figure 1, the arm 35 descends, permitting the weight 33 to move the cord, tape or chain jdownward and. turn the wheel 3l so as to bring the arm 29 into the position shown in Figure 4, which closes circuit inthe switch and permits the elevator to move.

When the door is opened as in Figure 2, the arm 35 lifts the ball 34k and weight 33, allowing the weight 36 on the wheel 31 to turn said wheel clockwise and so bring the arm 29 into the dotted line position .in Figure 4. This opens the circuit and prevents operation of the elevator. The weight 36 has a smaller turning moment than the Weight 33.

By attaching the weight 36 to the wheel 31, independently of the operating cord, tape or chain 32, said weight will act to open the circuit at the switch 28 automatically in case the cord or chain should be come detached.

It will be readily seen that certain advan-- tages of my invention are applicable to doors operated entirelyby hand, wherein the door closer is replaced by a door check to preventslamming. .By applying the sup porting plate 15 to the free taceot such a door-check, the saving of space achieved by my invention is attained; In my claims,

therefore, the term door, operating device.

is meant to apply either to a door closer, at door check or a combination of the two as illustrated herein.

A variety of changes may be made in this T ating device inside of said supporting plate,v V

and operative connections between the operating deviceand the door partly supported by said supporting plate. u

2. Apparatus as in claim 1 wherein a toggle lever system is pivotally' attached to the.

lower 'end of the supporting plate which system is operatively connected with theydoor operating device. I

3. Apparatus as in claim 1 in 7 combination with a horizontal supporting rail tor the hangers ofa sliding door, which rail is fixed to the door operating device on the side opposite the .supporting right angles to it.

In testimony whereof I have hereto al fixed my signature on ruary, 1926.

HAROLD W. sIioivNARn.

this 8th day of Febplate and at 

